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Cla-val 50B-5KG User Manual Page 4

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50B-5KG
• Adjustable Opening Speed For Pump Suction
Protection
• Pilot Control Provides Wide Flow Range With
Minimal Pressure Variations
• Controlled Closing For System Protection
• Modulates Within 5% of Setting for Accurate
Pressure Control
• Pressure Setting Adjustable
• Pressure Setting Not Affected by Pressure at Valve
Discharge
The Model 50B-5KG Pump Suction Control Valve is
designed specifically for Fire Pump Suction Control Service.
It modulates to maintain the pump discharge in relation to
the suction head available, thus assuring that the suction
head pressure does not fall below the pre-set minimum.
Pump Suction Control Valve
Typical Installation
When there is a demand in the Fire System, the pump is started,
delivering water from the supply source to the area of demand. To
assure that the fire pump draw does not exceed the available water
supply, the Model 50B-5KG, sensing the pump suction, modulates
to prevent suction pressure from dropping below a pre-set minimum.
By maintaining minimum pressure requirements in the supply main,
the main is protected from possible damage or backflow conditions.
Also, a minimum supply pressure is provided for local fire apparatus.
Specifications
Globe:
3" - 8" flanged
Angle:
3" - 8" flanged
150 and 300 ANSI B16.42
150 class - 250 psi Max.
300 class - 400 psi Max
Water, to +180°F Max.
Main valve body & cover
Ductile Iron ASTM A-536
Main valve trim:
Brass QQ-B-626
Bronze Seat ASTM B61
Stainless Steel Stem 303
Delrin Sleeved
Pilot control system:
Cast Bronze ASTM B62 with
303 Stainless Steel trim
Available in the following
pressure range only:
5 to 25 psi
Set at 10 psi
Sizes
End Details
Pressure Ratings
Temperature Range
Materials
Adjustment Range
TO
FIRE SERVICE
SYSTEM
REMOTE SENSING LINE
CLA-VAL 50B-5KG
FIRE PUMP
SUPPLY SYSTEM
50B-5KG
MODEL
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